US5676543A - Gum tissue retraction device and method - Google Patents

Gum tissue retraction device and method Download PDF

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Publication number
US5676543A
US5676543A US08/400,849 US40084995A US5676543A US 5676543 A US5676543 A US 5676543A US 40084995 A US40084995 A US 40084995A US 5676543 A US5676543 A US 5676543A
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United States
Prior art keywords
mold
silicone
tooth
astringent
syringeable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/400,849
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English (en)
Inventor
William B. Dragan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centrix Inc
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Centrix Inc
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Filing date
Publication date
Application filed by Centrix Inc filed Critical Centrix Inc
Assigned to CENTRIX, INC. reassignment CENTRIX, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DRAGAN, WILLIAM B.
Priority to US08/400,849 priority Critical patent/US5676543A/en
Priority to BR9607726A priority patent/BR9607726A/pt
Priority to PCT/US1996/002773 priority patent/WO1996027342A1/fr
Priority to JP52694496A priority patent/JP3881016B2/ja
Priority to DE69635704T priority patent/DE69635704T2/de
Priority to AU51351/96A priority patent/AU5135196A/en
Priority to EP96907912A priority patent/EP0813394B1/fr
Priority to KR10-1997-0705931A priority patent/KR100422176B1/ko
Publication of US5676543A publication Critical patent/US5676543A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Assigned to SECORE & WALLER, L.L.P., U.S. SECURITIES AND EXCHANGE COMMISSION, HANS, DWAYNE C., MR reassignment SECORE & WALLER, L.L.P. COURT APPOINTMENT (SEE DOCUMENT FOR DETAILS). Assignors: ABC VIATICALS, INC.,, BLUE WATER TRUST, DESTINY TRUST, LAMONDA MANAGEMENT FAMILY LIMITED PARTNERSHIP, LAMONDA, JESSE W, JR, LAMONDA, KEITH C., STRUCTERED LIFE SETTLEMENTS, INC.,
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/0033—Gingival retraction appliances

Definitions

  • This invention relates in general to retraction of gum tissue as required in various dental procedures, and more particularly to the application of an astringent and/or hemostatic agent to gum tissue surrounding a tooth in preparation for taking an impression as required for making dental crowns and bridges or the like.
  • One such method uses a compression cap, which is a device in the form of a soft cup which is placed over the tooth after a retraction cord has been positioned about the base of the tooth. The patient then bites onto the compression cap to force the string between the gum tissue or gingiva and the tooth.
  • Still another method requires the use of a hydrocolloid material which is injected about the tooth to effect the retraction.
  • hydrocolloid material exerts no pressure to aid retraction and hemostasis.
  • the hydrocolloid material requires other equipment including a boiler and conditioner to heat the hydrocolloid material to achieve the proper consistency required to effect the desired retraction.
  • hydrocolloid materials being basically comprised of water, do not create any pressure which greatly facilitates hemostasis and retraction. Hemostasis and retraction are essential to the taking of a good impression.
  • the present invention relates to a device in the form of a tooth cast or mold made by utilizing a heavy body putty type moldable material suitable for impressions, such as a silicone, which can be readily applied to a given tooth or teeth and surrounding area to form the mold.
  • the moldable material may include as a component part thereof a suitable styptic substance or astringent.
  • the moldable material may be of a type that sets into a solid.
  • the mold After the mold has been formed about the tooth and gum area, it is removed and a less viscous flowable material incorporating a styptic substance or astringent is then placed in the impression of the tooth and gum area formed in the mold.
  • the mold together with the less viscous material, is then returned to the tooth and gum area, whereupon placement on the patient causes the less viscous material to flow and to be forced between the tooth and the gum creating both hemostasis and retraction of the gum tissue.
  • the less viscous material may be of such a nature that it initially flows between the tooth and gum, and then sets into a solid. When the less viscous material sets, it forces a sulcus or track to be formed about the tooth.
  • the compression of the less viscous material, containing an astringent, by the mold thus creates the necessary pressure and chemical action to cause hemostasis or stopping the flow of blood, and simultaneously effects the desired retraction of the gingiva.
  • the dentist Upon the removal of the mold the dentist is immediately able to make a good impression of the tooth and gum area as required in making dental crowns and bridges or the like.
  • a mold is used together with a flowable material containing an astringent.
  • FIG. 1 is a perspective view illustrating the application of the heavy body moldable material placed about the tooth in preparation of making the mold.
  • FIG. 2 is a view illustrating a patient biting onto the moldable coating material to form the mold.
  • FIG. 3 is a plan view looking into the mold after being removed from the patient.
  • FIG. 4 is a cross sectional view of the mold of FIG. 3 filled with a flowable material.
  • FIG. 5 is a partial cross section view in which the mold of FIG. 4 with the flowable material is returned to the patient's mouth.
  • FIG. 6 is a partial cross section view illustrating the patient biting down onto the mold as the flowable material is positioned to effect the desired retraction and hemostasis.
  • FIG. 7 is a view of the gum retracted from the tooth.
  • FIG. 1 illustrates the material 10 for making the mold of a tooth or teeth 12. Tooth 12' is a prepared tooth. Only the lower quadrant is illustrated.
  • the mold material 10 may be any moldable material such as a putty or heavy body silicone material.
  • the silicone material may comprise a two-part system that includes a base portion and a catalyst portion which, when mixed, will quickly set or become solid. The time of setting can be varied within a desired range by controlling the respective proportion of the base and catalyst.
  • Such silicone materials are known and are available from various manufacturers, for example Conquest by Pentron, EXAFLEX by G.C., EXTRUDE by Kerr Corporation, IMPRESS and EXPRESS by 3M, and others. While the silicone material is preferred, other materials such as polyethers, polysulfides, or any other moldable material may be used.
  • a condensation silicone is preferred over an addition silicone because the set time of the condensation silicone can be adjusted easily with a liquid catalyst by the Dentist, and the condensation silicone will not be affected by rubber gloves. The condensation silicones are also less expensive. The addition silicone may be contaminated by rubber gloves and therefore will not set. After mixing, the mold material 10 is placed around the teeth 12 and 12', and gum 14.
  • the heavy body silicone material may be fortified with between five percent to twenty-five percent by weight of a suitable astringent to aid in gum tissue retraction and hemostasis. As little as one half of one percent will have some therapeutic effect, but the preferred amount is between five percent to twenty-five percent by weight.
  • Any known astringent and/or hemostasis agent that causes retraction such as aluminum potassium sulfate or potassium aluminum sulfate, aluminum sulfate or alum, ferric sulfate, aluminum ammnonium sulfate, ferric chloride, aluminum chloride, sodium chloride, epinephrine, negatol, tannic acid, zinc chloride, zinc phenol sulfonate, or other known astringents and/or hemostatic agents may be mixed with the heavy body silicone material.
  • Negatol is a condensation product of meta cresol sulfonic acid and formaldehyde.
  • the aluminum sulfate acts as a filler. Any chemical substance may be used as long as the substance aids in causing retraction of the gum tissue or gingiva.
  • FIG. 2 illustrates the mold material 10 placed about the lower teeth 12, 12' and gum 14 and allowed to set as the patient bites down slightly with upper teeth 16 leaving a one to two millimeter opening in the front. This is held for a minimum of one minute or until the mold material 10 sets.
  • Another method may be to use a standard impression tray. The tray with the mold material therein is placed over the teeth and held for a minimum of one minute, or until the mold material sets. When the mold material 10 has set it is removed from the mouth, washed of debris and dried. A mold of the lower teeth 12 and 12' is thereby formed.
  • FIG. 3 illustrates the set mold material 10 removed from the patient's mouth.
  • An impression 20 of the lower teeth 12 and 12' is formed in the mold material 10.
  • the impression 20 closely conforms to the shape of the teeth 12, 12' and gum 14.
  • the opposite side of the mold material 10, not shown in FIG. 3, will also contain a partial impression of each of the upper teeth 16.
  • FIG. 4 illustrates the impression 20 of the lower teeth 12 and 12' of the mold material 10 filled with a layer of flowable, syringeable or less viscous material 18 which has the proper astringent and/or hemostatic agent for causing retraction.
  • the partial impression 22 of the upper teeth 16 can be seen in FIG. 4.
  • the flowable material 18 is formed with between five percent and twenty-five percent by weight of an astringent and/or hemostatic agent similar to that hereinbefore described. As indicated before, as little as one half of one percent may have a therapeutic effect. Additionally, as much as fifty percent by weight of aluminum ammonium sulfate has been incorporated into a light body condensation silicone without any effect on the set of the material.
  • the flowable material needs only to be initially flowable and may set into a solid after flowing near or between the tooth and gum. However, preferably the initially flowable material will set.
  • the flowable material therefore, may be any of the silicone materials described above in relation to the mold material, or some other material that is compatible with the mold material.
  • the initially flowable material may be a vinyl polysiloxane.
  • FIG. 5 illustrates the mold material 10 with the flowable material 18 returned to the patient's mouth over lower teeth 12 and 12'.
  • the flowable material 18 begins to flow around the teeth 12, 12' and gum 14.
  • the flowable material 18 needs only be firm enough for easy placement, and thin enough to flow around the teeth 12, 12' and gum 14 when a slight pressure is applied.
  • FIG. 6 illustrates the patient exerting a slight pressure on the mold material 10 assuring that the flowable material 18 is forced between the teeth 12, 12' and gum 14.
  • the mold material 10 acting like a dam, causes the flowable material 18 to exert pressure along the gingival line forming a sulcus, groove, or trough.
  • the pressure along with the astringent creates both hemostasis and retraction of the gum tissue 14.
  • the flowable material will set facilitating hemostasis and retraction as well as ease of removal.
  • the entire moldable material 10 with the set initially flowable material 18 is removed. Upon removal, the dentist can then proceed to take an impression of teeth 12 and 12' using standard materials and known impression techniques.
  • FIG. 7 illustrates the sulcus 24 formed around the prepared tooth 12' according to the present invention.
  • the method utilizing the present invention can be described as follows.
  • the tooth is conventionally prepared for a bridge or crown.
  • a first mold material is prepared using a silicone material and a catalyst.
  • the first mold material may be mixed on a glass slab with the first mold material cross hatched prior to adding the liquid catalyst to ensure proper coverage of the catalyst.
  • the mold material is mixed for a short time depending on the amount of catalyst used.
  • the first mold material is placed either in a disposable plastic tray or formed in an elongated cylinder and placed about the patient's teeth by hand. After the first mold material has set, approximately one to two minutes, the first mold material is removed, washed, and dried.
  • a second initially flowable material containing an astringent and/or hemostatic agent is mixed with a catalyst and placed in the impressions of the teeth formed in the set first mold material.
  • the first set mold material and the second initially flowable material are placed over the teeth, in the disposable tray if used, and the patient instructed to bite down or hold the tray. After about five minutes the initially flowable material should be set and the retraction complete.
  • the set mold material and the now set initially flowable material is removed and discarded.
  • the gum surrounding the prepared teeth is now retracted and ready for taking of an impression for the making of the bridge or crown using standard techniques.
  • the moldable material 10 used to make the original mold need not include any astringent component, as it is the second flowable or less viscous material 18 which is the primary source of the astringent to the teeth 12, 12' and gum 14.
  • the incorporation of the astringent in the mold material 10 is not as critical as the need of the astringent in the flowable or less viscous material 18.
  • incorporating an astringent in the moldable material 10 will function as an additional aid in providing retraction and hemostasis.
  • the moldable material 10 may be formed of a suitable color which may be different from that of the flowable material 18 so as to distinguish the two different materials.
  • the moldable material 10 may be blue and the initially flowable material may be purple.
  • the retraction device and method herein described is relatively simple and expedient and results in a positive retraction of the gum tissue so as to insure that all margins can be captured by the subsequent impression procedure.
  • the invention described further reduces the trauma and discomfort experienced by the patient relative to prior retraction procedures.
  • the present invention provides enhanced results with much greater ease for the dentist. Additionally, the present invention provides much greater comfort for the patient. Accordingly the present invention greatly advances the art of dentistry.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Preparations (AREA)
US08/400,849 1995-03-08 1995-03-08 Gum tissue retraction device and method Expired - Lifetime US5676543A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US08/400,849 US5676543A (en) 1995-03-08 1995-03-08 Gum tissue retraction device and method
DE69635704T DE69635704T2 (de) 1995-03-08 1996-03-01 Zahnfleischretraktionsvorrichtung
PCT/US1996/002773 WO1996027342A1 (fr) 1995-03-08 1996-03-01 Dispositif et procede de retraction du tissu gingival
JP52694496A JP3881016B2 (ja) 1995-03-08 1996-03-01 歯肉組織圧排装置および方法
BR9607726A BR9607726A (pt) 1995-03-08 1996-03-01 Dispositivo e método para retração de tecido gengival
AU51351/96A AU5135196A (en) 1995-03-08 1996-03-01 Gum tissue retraction device and method
EP96907912A EP0813394B1 (fr) 1995-03-08 1996-03-01 Dispositif de retraction du tissu gingival
KR10-1997-0705931A KR100422176B1 (ko) 1995-03-08 1997-08-26 치은조직수축장치및방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/400,849 US5676543A (en) 1995-03-08 1995-03-08 Gum tissue retraction device and method

Publications (1)

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US5676543A true US5676543A (en) 1997-10-14

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US08/400,849 Expired - Lifetime US5676543A (en) 1995-03-08 1995-03-08 Gum tissue retraction device and method

Country Status (8)

Country Link
US (1) US5676543A (fr)
EP (1) EP0813394B1 (fr)
JP (1) JP3881016B2 (fr)
KR (1) KR100422176B1 (fr)
AU (1) AU5135196A (fr)
BR (1) BR9607726A (fr)
DE (1) DE69635704T2 (fr)
WO (1) WO1996027342A1 (fr)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6048202A (en) * 1997-02-19 2000-04-11 Ultradent Products, Inc. Polymerizable isolation barriers with enhanced tissue adherence and methods for forming and using such barriers
WO2002067805A1 (fr) * 2001-02-23 2002-09-06 Cosmedent, Inc. Restaurations dentaires provisoires
WO2004000153A2 (fr) * 2002-06-25 2003-12-31 Radix Corporation Dispositifs de retraction gingivale a composant de doublure structurel destine a l'insertion fiable d'un materiau de retraction dans la fissure gingivale
US20040106085A1 (en) * 2001-10-10 2004-06-03 Pekka Vallittu Dental or medical device
US20040106086A1 (en) * 2002-12-02 2004-06-03 Dragan William B. Method and device for the retraction and hemostasis of tissue during crown and bridge procedures
US20040126740A1 (en) * 2001-06-15 2004-07-01 Allan Coopersmith Gingival retraction device and method
EP1459701A1 (fr) * 2003-03-19 2004-09-22 Coltène AG Ensenmble dentaire et procédé pour élargir le sillon gingival
WO2004082510A1 (fr) * 2003-03-19 2004-09-30 Coltene Ag Ensemble dentaire et procede de retraction du sillon
US20040265777A1 (en) * 2003-06-25 2004-12-30 Heasley John M. Gingival retraction devices with a structural backing component to reliably insert retraction material into the gingival crevice
US20050043589A1 (en) * 2003-06-05 2005-02-24 Hydrocision, Inc. Disposable endoscope and method of making a disposable endoscope
USRE38722E1 (en) * 1997-02-19 2005-04-12 Ultradent Products, Inc. Polymerizable isolation barriers containing reflective materials and methods for forming and using such barriers
US20050118552A1 (en) * 2001-06-15 2005-06-02 Allan Coopersmith Gingival retraction device and method
US20050202367A1 (en) * 2004-03-15 2005-09-15 Ralf Kollefrath Process for the retraction of sulcus
US20050221257A1 (en) * 2002-09-27 2005-10-06 Andreas Van Eikeren Dental masking product for teeth and gum
US20050277087A1 (en) * 2004-06-09 2005-12-15 Dds Dan E F Reinforced gingival retraction cord
US20050277088A1 (en) * 2004-06-09 2005-12-15 Fischer Dan E Reinforced gingival retraction cord
US20050287494A1 (en) * 2004-06-29 2005-12-29 Biotech One Inc, Gingival retraction material
DE102005008355A1 (de) * 2005-02-23 2006-08-24 Coltène/Whaledent GmbH + Co. KG Kompressenkappe für Zahnstümpfe und Verfahren zum Trocknen eines Zahnstumpfes
US20070087304A1 (en) * 2002-12-02 2007-04-19 Discko John J Jr Preloaded dental dam and method for gingival tissue retraction
US20070196785A1 (en) * 2003-09-16 2007-08-23 Graham Matheson Dental appliance for deflecting gingival tissue
US20070259313A1 (en) * 2002-12-02 2007-11-08 Centrix, Inc. Gingival tissue retraction device and method
US20080096164A1 (en) * 2006-10-20 2008-04-24 Ultradent Products, Inc. Chemically impregnated absorbent gingival retraction cord comprising silk
US20090075240A1 (en) * 2006-04-05 2009-03-19 Centrix, Inc. Conforming gingiva retraction compression cap and method of retracting tissue around a tooth
US20090274999A1 (en) * 2005-10-28 2009-11-05 Allan Coopersmith Custom impression coping and methods of manufacture and use thereof
US20090305188A1 (en) * 2008-06-09 2009-12-10 Ultradent Products, Inc. Chemically pre-impregnated silk retraction cords having increased strength
US20100323323A1 (en) * 2005-06-24 2010-12-23 Cao Group, Inc. Pliable gingival isolation material
US20120219925A1 (en) * 2011-02-24 2012-08-30 Aaron Tropmann Dental Impression Apparatus
US8602783B2 (en) * 2011-10-21 2013-12-10 Zvi Fudim Impression gingival cuff for dental implants
US8753613B2 (en) 2007-03-30 2014-06-17 Centrix, Inc. Dental retraction material having enhanced fluid absorption
WO2014100305A1 (fr) 2012-12-19 2014-06-26 Dentsply International Inc. Composition de rétraction dentaire durcissable à base de siloxane de polyvinyle
US20150173867A1 (en) * 2013-12-20 2015-06-25 Mark Mahn Method and system of making dental impressions
WO2017040726A1 (fr) * 2015-09-03 2017-03-09 Centrix, Inc. Matériau et procédé de rétraction gingival et d'empreinte en une étape
DE112018004161T5 (de) 2017-08-14 2020-04-30 Centrix, Inc. Zahnfleischretraktionsvorrichtung mit abdrucknahme und verfahren zur ver wendung derselben
RU2763249C1 (ru) * 2021-02-02 2021-12-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный медицинский университет" Министерства здравоохранения Российской Федерации ФГБОУ ВО ВолгГМУ МЗ РФ Способ высокоточного препарирования зубов под ортопедические конструкции

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KR20050003888A (ko) * 2003-07-04 2005-01-12 박준철 치아교합면 음형
DE102004032099A1 (de) * 2004-07-01 2006-01-26 Coltène/Whaledent GmbH + Co. KG Retraktionsfaden mit verbesserter Saugfähigkeit
EP1886659A1 (fr) 2006-08-08 2008-02-13 3M Innovative Properties Company Composition dentaire de rétraction durcissable, son procédé de fabrication et d'utilisation
DE102008005469A1 (de) 2008-01-21 2009-07-23 Kettenbach Gmbh & Co. Kg Pastöses Einsetzmaterial zur Erweiterung des Zahnfleischsulcus und dessen Verwendung
KR101363612B1 (ko) * 2012-11-09 2014-02-17 이희성 퍼티를 사용한 틀니의 제조 방법
DE202013005258U1 (de) 2013-06-11 2013-07-10 Kettenbach Gmbh & Co. Kg Pastöses Einsetzmaterial zur Erweiterung des Zahnfleischsulcus und dessen Verwendung

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Cited By (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38721E1 (en) 1997-02-19 2005-04-12 Ultradent Products, Inc. Polymerizable isolation barriers with reduced polymerization strength and methods for forming and using such barriers
US6086370A (en) * 1997-02-19 2000-07-11 Ultradent Products, Inc. Polymerizable isolation barriers containing reflective materials and methods for forming and using such barriers
USRE38722E1 (en) * 1997-02-19 2005-04-12 Ultradent Products, Inc. Polymerizable isolation barriers containing reflective materials and methods for forming and using such barriers
USRE38823E1 (en) 1997-02-19 2005-10-11 Ultradent Products, Inc. Polymerizable isolation barriers with enhanced tissue adherence and methods for forming and using such barriers
US6048202A (en) * 1997-02-19 2000-04-11 Ultradent Products, Inc. Polymerizable isolation barriers with enhanced tissue adherence and methods for forming and using such barriers
WO2002067805A1 (fr) * 2001-02-23 2002-09-06 Cosmedent, Inc. Restaurations dentaires provisoires
US6659772B2 (en) * 2001-02-23 2003-12-09 Cosmedent, Inc. Provisional restorations for human teeth and method
US20040126740A1 (en) * 2001-06-15 2004-07-01 Allan Coopersmith Gingival retraction device and method
US7153134B2 (en) 2001-06-15 2006-12-26 Allan Coopersmith Gingival retraction device and method
US7033173B2 (en) 2001-06-15 2006-04-25 Allan Coopersmith Gingival retraction device and method
US20050118552A1 (en) * 2001-06-15 2005-06-02 Allan Coopersmith Gingival retraction device and method
US20040106085A1 (en) * 2001-10-10 2004-06-03 Pekka Vallittu Dental or medical device
WO2004000153A3 (fr) * 2002-06-25 2004-06-10 Radix Corp Dispositifs de retraction gingivale a composant de doublure structurel destine a l'insertion fiable d'un materiau de retraction dans la fissure gingivale
WO2004000153A2 (fr) * 2002-06-25 2003-12-31 Radix Corporation Dispositifs de retraction gingivale a composant de doublure structurel destine a l'insertion fiable d'un materiau de retraction dans la fissure gingivale
US7789662B2 (en) * 2002-09-24 2010-09-07 Voco Gmbh Dental masking product for teeth and gum
US20050221257A1 (en) * 2002-09-27 2005-10-06 Andreas Van Eikeren Dental masking product for teeth and gum
US7195483B2 (en) 2002-12-02 2007-03-27 Centrix, Inc. Method and device for the retraction and hemostasis of tissue during crown and bridge procedures
US20070259313A1 (en) * 2002-12-02 2007-11-08 Centrix, Inc. Gingival tissue retraction device and method
US7189075B2 (en) 2002-12-02 2007-03-13 Centrix, Inc. Method and device for the retraction and hemostasis of tissue during crown and bridge procedures
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DE69635704T2 (de) 2006-07-27
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DE69635704D1 (de) 2006-03-30
WO1996027342A1 (fr) 1996-09-12
EP0813394B1 (fr) 2006-01-04
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AU5135196A (en) 1996-09-23
KR100422176B1 (ko) 2004-06-16
EP0813394A4 (fr) 2004-09-22
JP3881016B2 (ja) 2007-02-14

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